bài 1 :

a) (\(\dfrac{7}{3}\)+3,5 ) : (-\(\dfrac{25}{6}\)+\(\dfrac{22}{7}\))+0,5

b)\(\dfrac{38}{7}\)+(-3,25)-\(\dfrac{17}{7}\)+4,55

bài 2 :

a, x : 1\(\dfrac{2}{7}\)=-3,5

b, 0,4.x-\(\dfrac{1}{5}\).x = \(\dfrac{3}{4}\)

giúp mik vs 😭😭😫😓🙏